Man is fond of counting his troubles, but he does not count his joys.
If he counted them up as he ought to, he would see that every lot has
enough happiness provided for it. Fyodor Dostoevsky

Your success and happiness lies in you. Resolve to keep happy, and your
joy and you shall form an invincible host against difficulties.
Helen Keller

They must often change, who would be
constant in happiness or wisdom. Confucius

A man who as a physical being is always turned toward the outside,
thinking that his happiness lies outside him, finally turns inward and
discovers that the source is within him. Søren Kierkegaard

The essence of philosophy is that a man should so live that his
happiness shall depend as little as possible on external things. Epictetus

But what is happiness except the simple harmony between a man and the
life he leads?
Albert Camus

If you ever find happiness by hunting for it, you will find it, as the
old woman did her lost spectacles, safe on her own nose all the time.
Josh Billings

There is no value in life except what you choose to place upon it and
no happiness in any place except what you bring to it yourself.
Henry David Thoreau

The happiness of your life depends upon the quality of your thoughts:
therefore, guard accordingly, and take care that you entertain no
notions unsuitable to virtue and reasonable nature. Marcus Aurelius

Happiness lies in the joy of achievement and the thrill of creative
effort. Franklin D. Roosevelt

Wealth, like happiness, is never attained when sought after directly.
It comes as a by-product of providing a useful service.
Henry Ford

Happiness is that state of consciousness which proceeds from the
achievement of one's values. Ayn Rand

Indeed, man wishes to be happy even when he so lives as to make
happiness impossible.
Saint Augustine

What we call the secret of happiness is no more a secret than our
willingness to choose life. Leo Buscaglia

Happiness is neither virtue nor pleasure nor this thing nor that but
simply growth, We are happy when we are growing. William Butler Yeats